Workaround compiler bug #15792 when AVB_NUM_MEDIA_CLOCKS==0
Marks media clock interface as nullable
Change #if defined() macros to #if
Fix typo
Return listener invalid if AVB_NUM_SINKS == 0
Fix error in #if AVB_NUM_SOURCES should be SINKS
Conditionally remove Talker hook code when NUM_SOURCES is 0
Adding old module_avb_video back
Change clock accuracy to a valid option - per gPTP.com.c.5.3
Set offsetScaledLogVariance to unmeasured default per gPTP.com.c.5.4
Merge branch 'master' into video

Conflicts:
	module_avb/src/avb.xc
Mark but control chan as nullable
Guard compile of video talker with AVB_NUM_SOURCES
Remove unroll pragma from TSI input

v13 LLVM produces worse code with the loop unrolled.
Improve initial synchronisation of TSI input
Remove unused variables
Use XC pointers in TSI output implementation
Add #error for multiple formats defined simultaneously
Match combined talker listener params with non-combined